The nicknames for Jimmy devolve so much that its hilarious. Here are the names that people have called Jimmy so far:
Timmy - most common and most people call him this to the point they forget his name is Jimmy. 9/10 stars, iconic
Tim - second most common, a little lacking though 8/10
Jim - I believe only Joel calls him Jim. Its very wholesome and sweet 12/10 stars
Big Man Jim - 10/10 nothing else to say about it
James - only his mother calls him that, -3/10 stars, he doesnt like it and I refuse to believe that Jimmy is a nickname for James
Toy boy - idk what to think, its funny sometimes but then not other times. 11/10 some days, 7/10 others
Jiggles - Skizz... what in the ever loving heck made him consider that a name? -10,000/10 its too cursed